Insight into genetic predisposition to chronic lymphocytic leukemia from integrative epigenomics.

Genome-wide association studies have provided evidence for inherited genetic predisposition to chronic lymphocytic leukemia (CLL). To gain insight into the mechanisms underlying CLL risk we analyze chromatin accessibility, active regulatory elements marked by H3K27ac, and DNA methylation at 42 risk...

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Detalles Bibliográficos
Autores: Speedy, Helen E., Beekman, Renée, Chapaprieta, Vicente, Orlando, Giulia, Law, Philip J., Martín García, David, Gutiérrez-Abril, Jesús, Catovsky, Daniel, Beà Bobet, Sílvia M., Clot Razquin, Guillem, Puiggròs, Montserrat, Torrents Arenales, David, Puente, Xose S., Allan, James M., López-Otin, Carlos, Campo Güerri, Elias, Houlston, Richard S., Martín-Subero, José Ignacio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/148038
Acceso en línea:https://hdl.handle.net/2445/148038
Access Level:acceso abierto
Palabra clave:Epigènesi
Leucèmia limfocítica crònica
Cèl·lules B
Epigenesis
Chronic lymphocytic leukemia
B cells
Descripción
Sumario:Genome-wide association studies have provided evidence for inherited genetic predisposition to chronic lymphocytic leukemia (CLL). To gain insight into the mechanisms underlying CLL risk we analyze chromatin accessibility, active regulatory elements marked by H3K27ac, and DNA methylation at 42 risk loci in up to 486 primary CLLs. We identify that risk loci are significantly enriched for active chromatin in CLL with evidence of being CLL-specific or differentially regulated in normal B-cell development. We then use in situ promoter capture Hi-C, in conjunction with gene expression data to reveal likely target genes of the risk loci. Candidate target genes are enriched for pathways related to B-cell development such as MYC and BCL2 signalling. At 14 loci the analysis highlights 63 variants as the probable functional basis of CLL risk. By integrating genetic and epigenetic information our analysis reveals novel insights into the relationship between inherited predisposition and the regulatory chromatin landscape of CLL.

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